在低温环境中减轻地质聚合物的强度损失,通过添加酸添加酸
1Department of Applied Sciences, University of Québec in Chicoutimi (UQAC), 555, Boul. de l'Université, Saguenay, QC G7H 2B1, Canada.
Materials (Basel, Switzerland)
|September 13, 2025
概括
化 (NaNO2) 增强了地质聚合物结合剂,适用于寒冷的气候. 添加3重%的NaNO2显著提高了零下条件下的压力强度和耐用性,使其成为寒冷天气建筑的可行添加剂.
科学领域:
- 材料科学 材料科学 材料科学
- 土木工程 土木工程是指土木工程.
- 地质化学 地质化学
背景情况:
- 地质聚合物粘合剂为波特兰水泥提供了一个可持续的替代品.
- 它们在寒冷气候中的表现尚不清楚.
- 低碳粘合剂对于减少建筑物的环境影响至关重要.
研究的目的:
- 研究酸盐 (NaNO2) 对地质聚合物固化在-10°C时固化的特性的影响.
- 为了评估NaNO2作为化学添加剂用于寒冷天气的地质聚合物应用.
- 为了确定最佳的NaNO2剂量,以改善地质聚合物在零度以下环境中的性能.
主要方法:
- 地质聚合物粘合剂由石残留物,飞灰和废玻璃合成.
- 在不同的剂量中添加NaNO2作为化学添加剂.
- 测试包括设置时间,压力强度,XRD,FTIR和SEM分析.
主要成果:
- 添加3重%的NaNO2提高了冷固化地质聚合物的强度,达到40.7MPa (从没有添加剂的26.1MPa).
- XRD证实了地质聚合物相;FTIR表明在低温下继续地质聚合.
- 随着NaNO2度的增加,SEM显示了减少裂纹和更密集的微观结构.
结论:
- NaNO2有效地减轻了零度以下固化对地质聚合物结合物的不良影响.
- 在寒冷条件下,NaNO2促进地质聚合物结构的发展.
- NaNO2是一种可行的添加剂,可以提高地质聚合物材料的寒冷耐用性.
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